Disclosed herein are new face-centered cubic (f.c.c.) high-entropy alloys with compositions (in atomic %) of FeaNibMncAldCreCf where a is between 37-43 atomic %, b is between 8-14 atomic %, c is between 32-38 atomic %, d is 4.5-10.5 atomic %, e is between 2.5-9 atomic % and f is between 0-2 atomic %. The undoped alloy has strength of 159 MPa and 40% elongation to failure, but the doped, carbon-containing alloy having 1.1 atomic percent carbon has yield strength of 360 MPa, an ultimate tensile strength (UTS) of 1200 MPa and 50% elongation to failure at room temperature. At 700° C., the yield strength is 214 MPa with 24% elongation to failure. Thus, the present alloy may replace austenitic stainless steels in applications where better strength is needed at both room temperature and elevated temperature in an oxidation resistant alloy.
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机译：本文公开了新的面心立方（fcc）高熵合金，其成分（原子％）为Fe a Ni b Mn c Al d Cr e C f 其中a在37-43原子％之间，b在8-14原子％之间，c在32之间-38原子％，d为4.5-10.5原子％，e在2.5-9原子％之间，f在0-2原子％之间。未掺杂的合金的强度为159 MPa，断裂伸长率为40％，但是掺杂的含碳原子率为1.1原子百分比的含碳合金的屈服强度为360 MPa，极限抗拉强度（UTS）为1200 MPa，伸长率为50％。在室温下失效。在700℃下，屈服强度为214MPa，断裂伸长率为24％。因此，在需要抗氧化合金在室温和高温下都需要更好的强度的应用中，本发明的合金可以代替奥氏体不锈钢。
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